WELLS, J. B. .; HOFFMAN, J. S. . Are You Throwing Money Away By Following the “2-Year Payback” Rule? C lose the Efficiency Gap: Use Profits to Drive the Capture of Value. Distributed Generation & Alternative Energy Journal, [S. l.], v. 15, n. 3, p. 42–52, 2000. DOI: 10.13052/dgaej2156-3306.1536. Disponível em: https://journals.riverpublishers.com/index.php/DGAEJ/article/view/14649. Acesso em: 14 may. 2026.